Possibility to use SIP services (calling via Internet) on your phone and on your PC; cost of the service will be merged with your SIM expenses. Call rates for SIP calls are in tables below.;

Call waiting can be activated via phone’s menu;

“Call Me Back” service- free SMS with request to call you.

Using the service:

The SIM card is programmed in such way, that all outgoing calls use automated call-back service, which means that there is no need to enter any additional digits and phone’s phonebook can be used.
The only difference with standard SIMs is that when making a call, the caller right after dialing receives an incoming call and must accept it to get connected.
! Some very old models of cell phones do not support automatic call-back, so the user needs to enter technical prefix before making a call.